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Q: In a rainforest, the vegetation that grows under the shade of a canopy is known as
  • A. Crown
  • B. Canopy
  • C. Understory
  • D. Forest floor
Correct Answer: Option C - In the rainforest, the vegetation may be demarcated into 5 categories. 1. Emergent layer– The level extends up to a height of 125-200 ft. mostly broad leaved trees, hardwood evergreens 2. Canopy layer– found between the height of 100-125 feet. This is the layer of highest biodiversity in the tropical forests. 3. Understory layer–its height ranges between 50-100 ft but the vegetation is much dense in between 50-75 ft. mostly vegetation of broad leaves. 4. Slab layer – These are up to a height of 0-25 ft. The sunlight never reaches here. 5. Forest floor– The sunlight reaches nowhere here almost no plants grow in this area. Here the forest floor things start to decay. Understorey comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.
C. In the rainforest, the vegetation may be demarcated into 5 categories. 1. Emergent layer– The level extends up to a height of 125-200 ft. mostly broad leaved trees, hardwood evergreens 2. Canopy layer– found between the height of 100-125 feet. This is the layer of highest biodiversity in the tropical forests. 3. Understory layer–its height ranges between 50-100 ft but the vegetation is much dense in between 50-75 ft. mostly vegetation of broad leaves. 4. Slab layer – These are up to a height of 0-25 ft. The sunlight never reaches here. 5. Forest floor– The sunlight reaches nowhere here almost no plants grow in this area. Here the forest floor things start to decay. Understorey comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.

Explanations:

In the rainforest, the vegetation may be demarcated into 5 categories. 1. Emergent layer– The level extends up to a height of 125-200 ft. mostly broad leaved trees, hardwood evergreens 2. Canopy layer– found between the height of 100-125 feet. This is the layer of highest biodiversity in the tropical forests. 3. Understory layer–its height ranges between 50-100 ft but the vegetation is much dense in between 50-75 ft. mostly vegetation of broad leaves. 4. Slab layer – These are up to a height of 0-25 ft. The sunlight never reaches here. 5. Forest floor– The sunlight reaches nowhere here almost no plants grow in this area. Here the forest floor things start to decay. Understorey comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.